The Gale Encyclopedia of Cancer: A Guide to Cancer and Its Treatments is a health reference product designed to inform and educate readers about a wide variety of cancers; other diseases and conditions related to cancers; diagnostic tests and procedures; nutrition and dietary practices beneficial to cancer patients; and various cancer treatments, including drugs.
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Cengage Learning believes the product to be comprehensive, but not necessarily definitive. It is intended to supplement, not replace, consultation with a physician or other healthcare practitioner. While Cengage Learning has made substantial efforts to provide information that is accurate, comprehensive, and up to date, Cengage Learning makes no representations or warranties of any kind, including without limitation, warranties of merchantability or fitness for a particular purpose, nor does it guarantee the accuracy, comprehensiveness, or timeliness of the information contained in this product. Readers should be aware that the universe of medical knowledge is constantly growing and changing, and that differences of opinion exist among authorities. Readers are also advised to seek professional diagnosis and treatment for any medical condition, and to discuss information obtained from this book with their healthcare provider.Unfortunately, man must suffer disease. Some diseases are totally reversible and can be effectively treated.
Moreover, some diseases with proper treatment have been virtually annihilated, such as polio, rheumatic fever, smallpox, and, to some extent, tuberculosis. Other diseases seem to target one organ, such as the heart, and there has been great progress in either fixing defects, adding blood flow, or giving medications to strengthen the diseased pump. Cancer, however, continues to frustrate even the cleverest of doctors or the most fastidious of health-conscious individuals. Why? By its very nature, cancer is a survivor.
It has only one purpose: to proliferate. After all, that is the definition of cancer: unregulated growth of cells that fail to heed the message to stop growing. Normal cells go through a cycle of division, aging, and then selection for death. Cancer cells are able to circumvent this normal cycle and escape recognition to be eliminated. There are many mechanisms that can contribute to this unregulated cell growth. One of these mechanisms is inheritance. Some individuals can be programmed for cancer due to inherited disorders in their genetic makeup. In its simplest terms, a person can inherit a faulty gene or a missing gene whose role is to eliminate damaged cells or to prevent imperfect cells from growing. Without this natural braking system, the damaged cells can divide and lead to more damaged cells with the same abnormal genetic makeup as the parent cells. Given enough time, and our inability to detect them, these groups of cells can grow to a size that will cause discomfort or other symptoms. Inherited genetics are obviously not the only source of abnormalities in cells. Humans do not live in a sterile world devoid of environmental attacks or pathogens. Humans must work, and working environments can be dangerous. Danger can come in the form of radiation, chemicals, or fibers to which we may be chronically exposed with or without our knowledge. Moreover, humans must eat, and if our food is contaminated with these environmental hazards, or if we prepare our food in a way that may change the chemical nature of the food to hazardous molecules, then chronic exposure to these toxins could damage cells. Finally, humans are social. They have found certain habits that are pleasing because they are relaxing or help release inhibitions. Such habits, including smoking and alcohol consumption, can have a myriad of influences on the genetic makeup of cells.
Free Online Books Download: Gale Encyclopedia Of Cancer 3 Volume Set 4th Edition